What is an idiom in AP Human Geography? Examples?

yall wanna me : )what software controls a computer’s basic functions? a. the central processor b.the bios c. the motherboard d. the operating system

Weak stimulus will cause a weak action potential. the stronger the stimulus, the stronger the action potential. a. true b. false

Alife insurance salesman sells on the average 3 life insurance policies per week. use poisson's law to calculate the probability that in a given week he will sell 2 or more policies but less than 5 policies? i just require an answer.